1642-49-5Relevant articles and documents
Synthesis and Properties of Aromatic-Terminated Diacetylene Organogelators and Their Application to Photopatterning of Polydiacetylenes
Aoki, Ken'Ichi,Horitsugu, Kousuke,Narazaki, Kenta,Seki, Atsushi,Takahashi, Daiki,Tamaoki, Nobuyuki
, p. 13160 - 13169 (2021/11/16)
A series of simply structured diacetylene-diamide-based gelators (DAGs) with aromatic terminals were synthesized, and their gelation and subsequent photopolymerization abilities were analyzed. DAGs with an adequate spacer length (n) and tolyl terminals (DA-Tn) interacted with aromatic solvents, such as benzene and xylenes, at elevated temperatures. During the subsequent cooling process, the DAGs interacted with each other through CH-πinteractions at their terminal positions. They also formed one-dimensional hydrogen bonding arrays through secondary amides, leading to stable organogels. These gels polymerized into π-conjugated polydiacetylenes (PDAs) under ultraviolet irradiation. In the p-xylene gels of DA-Tn, the spacer length exerted characteristic odd-even effects on the photopolymerization rates over a certain range (n = 3-6), which can be explained by periodic changes in the uniformity of the molecular packing modes. When the gelling solvent was changed to cyclohexane, the gelation and photopolymerization abilities were greatly improved because the DA-Tn gel networks became highly crystallized and transparent to ultraviolet light (254 nm). The ultimate conversion to PDA from DA-T8/cyclohexane gels was 45.2 wt %. Applying photolithographic techniques to the DAG with excellent photopolymerizability in the film state, we successfully fabricated microscale photopatterns of PDA. We also established a convenient removal process (development process) of DA monomers in unexposed areas. The resulting PDA patterns were quite stable to ambient light stimuli.
INSULIN CONJUGATES
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Paragraph 0580; 0592-0595, (2020/07/05)
The present invention relates to a conjugate comprising a sulfonamide of formula (I) and an active pharmaceutical ingredient such as an insulin analog comprising at least one mutation relative to the parent insulin, wherein the insulin analog comprises a mutation at position B16 which is substituted with a hydrophobic amino acid and/or a mutation at position B25 which is substituted with a hydrophobic amino acid. The present invention further relates to a sulfonamide of formula (A). Moreover, the present invention relates to an insulin analog comprising at least one mutation relative to the parent insulin.
Succinct synthesis of saturated hydroxy fatty acids and: In vitro evaluation of all hydroxylauric acids on FFA1, FFA4 and GPR84
Kaspersen, Mads Holmgaard,Jenkins, Laura,Dunlop, Julia,Milligan, Graeme,Ulven, Trond
, p. 1360 - 1365 (2017/07/07)
Saturated hydroxy fatty acids make up a class of underexplored lipids with potentially interesting biological activities. We report a succinct and general synthetic route to saturated hydroxy fatty acids hydroxylated at position 6 or higher, and exemplify this with the synthesis of hydroxylauric acids. All regioisomers of hydroxylauric acids were tested on free fatty acid receptors FFA1, FFA4 and GPR84. The results show that the introduction of a hydroxy group and its position have a high impact on receptor activity.
